Do they have a hide that only has one opening? Give the option to go into the hide. Sometimes they aren't fully going into brumation, but simply conserving energy with the cold. If they just seem a little lethargic, what wattage bulb do you have? We have to make sure to keep our critters at the right temperature. The weather where you live may be colder, so you need to upgrade wattage to compensate for that. I recommend a laser thermometer to find out the temp in the basking area.
If you dragon keeps wanting to sleep, it might be time to look into helping them into brumation.
Pansy Pan on youtube has some good videos on it!